My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Content Are Alternative Investments Right for You? With alternative investments, it’s critical to sort through the complexity. The Three Keys to a Great Password Have fun and learn how to craft the perfect password with the help of this highly engaging infographic. 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose?